Optical and electronic characteristics of single walled carbon nanotubes and silicon nanoclusters by tetrahertz spectroscopy

Document Type

Article

Publication Date

12-1-2004

Abstract

We have conducted visible pump-THz (THz - terahertz) probe measurements on single wall carbon nanotubes deposited on quartz substrates. Our results suggest that the photoexcited nanotubes exhibit localized transport due to Lorentz-type photoinduced localized states from 0.2 to 0.7 THz. Upon modeling the THz transmission through the photoexcited layer with an effective dielectric constant given by Maxwell-Garnett theory we found that the data are best fit by a broad Lorentz state at 0.5 THz. These experiments were repeated for ion-implanted, 3-4 nm Si nanoclusters in quartz for which a similar behavior was observed. © 2004 American Institute of Physics.

Identifier

21044448402 (Scopus)

Publication Title

Journal of Applied Physics

External Full Text Location

https://doi.org/10.1063/1.1805720

ISSN

00218979

First Page

6685

Last Page

6689

Issue

11

Volume

96

Grant

DAAD 19-01-1-0009

Fund Ref

Army Research Office

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